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aapic.c revision 1.3 
      1 /* 	$NetBSD: aapic.c,v 1.3 2005/01/13 23:40:01 fvdl Exp $	*/
      2 
      3 #include <sys/cdefs.h>
      4 __KERNEL_RCSID(0, "$NetBSD: aapic.c,v 1.3 2005/01/13 23:40:01 fvdl Exp $");
      5 
      6 #include <sys/param.h>
      7 #include <sys/systm.h>
      8 #include <sys/kernel.h>
      9 #include <sys/device.h>
     10 
     11 #include <dev/pci/pcireg.h>
     12 #include <dev/pci/pcivar.h>
     13 #include <dev/pci/pcidevs.h>
     14 
     15 #include <arch/x86/pci/amd8131reg.h>
     16 
     17 #include "ioapic.h"
     18 
     19 #if NIOAPIC > 0
     20 extern int nioapics;
     21 #endif
     22 
     23 static int	aapic_match __P((struct device *, struct cfdata *, void *));
     24 static void	aapic_attach __P((struct device *, struct device *, void *));
     25 
     26 struct aapic_softc {
     27 	struct device sc_dev;
     28 };
     29 
     30 CFATTACH_DECL(aapic, sizeof(struct aapic_softc),
     31     aapic_match, aapic_attach, NULL, NULL);
     32 
     33 static int
     34 aapic_match(parent, match, aux)
     35 	struct device *parent;
     36 	struct cfdata *match;
     37 	void *aux;
     38 {
     39 	struct pci_attach_args *pa = aux;
     40 
     41 	if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_AMD &&
     42 	    PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_AMD_PCIX8131_APIC)
     43 		return (1);
     44 
     45 	return (0);
     46 }
     47 
     48 static void
     49 aapic_attach(parent, self, aux)
     50 	struct device *parent, *self;
     51 	void *aux;
     52 {
     53 	struct pci_attach_args *pa = aux;
     54 	char devinfo[256];
     55 	int bus, dev, func, rev;
     56 	pcitag_t tag;
     57 	pcireg_t reg;
     58 
     59 	pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
     60 	rev = PCI_REVISION(pa->pa_class);
     61 	printf(": %s (rev. 0x%02x)\n", devinfo, rev);
     62 
     63 #if NIOAPIC > 0
     64 	if (nioapics == 0)
     65 		return;
     66 #else
     67 	return;
     68 #endif
     69 
     70 	reg = pci_conf_read(pa->pa_pc, pa->pa_tag, AMD8131_IOAPIC_CTL);
     71 	reg |= AMD8131_IOAEN;
     72 	pci_conf_write(pa->pa_pc, pa->pa_tag, AMD8131_IOAPIC_CTL, reg);
     73 
     74 	pci_decompose_tag(pa->pa_pc, pa->pa_tag, &bus, &dev, &func);
     75 	func = 0;
     76 	tag = pci_make_tag(pa->pa_pc, bus, dev, func);
     77 	reg = pci_conf_read(pa->pa_pc, tag, AMD8131_PCIX_MISC);
     78 	reg &= ~AMD8131_NIOAMODE;
     79 	pci_conf_write(pa->pa_pc, tag, AMD8131_PCIX_MISC, reg);
     80 }
     81